2136764782393 has 2 divisors, whose sum is σ = 2136764782394. Its totient is φ = 2136764782392.

The previous prime is 2136764782381. The next prime is 2136764782433. The reversal of 2136764782393 is 3932874676312.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2061900708624 + 74864073769 = 1435932^2 + 273613^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2136764782393 is a prime.

It is not a weakly prime, because it can be changed into another prime (2136764782303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1068382391196 + 1068382391197.

It is an arithmetic number, because the mean of its divisors is an integer number (1068382391197).

Almost surely, 2^{2136764782393} is an apocalyptic number.

It is an amenable number.

2136764782393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2136764782393 is an equidigital number, since it uses as much as digits as its factorization.

2136764782393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54867456, while the sum is 61.

The spelling of 2136764782393 in words is "two trillion, one hundred thirty-six billion, seven hundred sixty-four million, seven hundred eighty-two thousand, three hundred ninety-three".